Vaporizer for combustion-engines



W. H.. HAYES.

lvAP0Rl`zER FOR cor/Bugnon ENGIN'ES.

' APPucATlN FILED 1A`N.27. 1919.

l 1,340,444, -lmmnmMay181920:

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WALTER HENRY HAYES, F LONDON, ENGLAND.

VAPORIZER FOR COMUSIION-ENGIINES.

. Application ined Jamai-w27, 1919. serial No. 273,272.

To all who m it may concern.'

Be it known that I, WALTER HENRY HAYES, a subject of the King of Great Britain and resident of London,` England, have invented certain new and useful Improvements in Vaporizer's for Combustion- Engines, of which the following is a specication.

This invention relates to vaporizers for internal-combustion engines where paraflin or like oil is employed and in which a proportion of the exhaust gases from the engine are introduced into the mixture of fuel fand air, the heat of the exhaust gases from the engine being employed to heata Vaporizing chamber for the vaporization of the mix-t ture before it enters the induction pipe of the engine.

In a vaporizer made in accordance with this invention the exhaust gases "issue from a nozzle and pass into an air inlet leading to a conduit in which is mounted a piston valve (hereinafter referred to as the controlling `valve) located beyond the said air inlet andsliding upon an axially .disposed fuel nozzle having lateral perforations, whereby said piston valve controls the admission of air, exhaust gases and fuel to said conduit, from which the mixture passes to a mixing chamber provided with a valve (hereinafter referred to as the main valve) through which the mixture is admitted to a vaporizing chamber of taperedform traversed at its upper and widest partby a heating pipe conveying exhaust gases. The entering mixture impinges directly upon saidy heating pipe and is drawn ofin from the lower and smaller end of the vaporizing chamber into the induction pipe lof the engine. The

main and controlling valves "are operated from an adjustable lever whereby the' saidvalves may be opened simultaneously or at such relative times as 'will secure the best working results. .l

rlhe accompanying drawings illustrate one` construction of vaporizer made in accordance with this invention. Figure l is a side elevation, partly in section, and Fig.

is an end view showing the apparatus fitted' in position, and also the parafn tank and' the wick feed connection.

ln thedrawing', m is a nozzle by which exhaust gases from the heating pipe Z) pass through the air inlet Z into a conduit g in which VVis mounted the controlling piston valve 7c located beyond the gas nozzle m and Specification of Letters Patent. i atellted hlty 18, 1920.

yair inlet Z and adapted to slide upon an axially disposed fuel nozzle 7i having lateral perforation's h4. The nozzle /L is carried by a plug LO screwed into the end of the conduit g Vaardprovided with a needle valve z' to which the paraffin is fed through an opening h1 by a wick inclosed in a pipe Q1 (Figi 2), whichis carried down to4 the bottom of the parafhn tank Q.

The controlling piston valve It" is cut away `on its under side so as to more quickly admit thefuel,l air and exhaust gases, and

for the vsame purpose the said valve may be fluted l,around its circumference at its forward end.

The conduit gu opens into a mixing chamber e in which is located thexmain valve f,

seated over the inlet al to the vaporizing chamber and pressed upon its seat by a spring, the spindle of the valve extending out through the upper end of the chamber e. The inlet d opens into the upper and widest part of the vaporizing chamber a which vis traversedA by-a heating pipe 'Z2 connected at one end to the exhaust pipe c and opening into the atmosphere at the other endbl.

o is a rocking lever operated by an arm h3. and adapted to actuate both the main valve f and the controlling valve 7:, for which purpose-one end of the lever projects through .the protruding end of the spindle of the valve f, while the other end. is provided with an adjustable stop o3 adapted to engage with thevupper cam like end ofa pivoted vlever 0 the lower end of which is furnished with a knob eneasing valve lc.

.In operation, the actuation of the rocka recess in the controlling piston ing lever 0 serves to open themaiuvalve f4 and. to slide the controlling piston valve c backward to uncover the perforations l# in the nozzle and to permit the air from the inlet Z and exhaust gases from'the nozzle m to enter the conduit g and the mixing chamber c. The nozzle m is adapted to act as an injector whereby the gases issuing therefrom serves to draw in and heat the air before coming into contact with the fuel. The mixture passes from the mixing chamber through the inlet d to thevaporizingchamber, on enteringwhich the said mixture imf pinges directly upon the heating pipe b through which the exhaust gases are pass ing,'and in this way itis possible to obtaina very ehcient and certain operation of the engine when running with paraffin or like liquid fuel after the exhaust pipe and the vaporizing chamber have been heated up by running the engine for a sufficient time with petrol or like light Ahydrocarbons.

l. A vaporizer for internal-combustion engines working with paraffin or the like liquid fuel, comprising a vaporizing chamber, a heating pipe passing through said chamber for conveying exhaust gases from the engine; a mixing chamber for the exhaust gases, air, and fuel, a main inlet valve .between said mixing and vaporizing chambers, an air inlet to said mixing chamber together with an inlet for the exhaust gases-a fuel nozzle with needle valve control, a wick feed to said fuel nozzle, a controlling valve mounted so as to slide axially in relation to said fuel nozzle and controlling the inlet of y fuel, and exhaust gases and air to said mixing chamber and means for actuating both the main and controlling valve from one lever.

2. A vaporizer for internal-combustion engines working with paraffin or the `like liquid fuel, comprising a mixing chamber, a vaporizing chamber leading from said mixing chamber to the induction pipe of the engine, a pipe conveying exhaust gases Ywhereby said vaporizing chamber is heated,

a main valve between said mixing kand vapoi'izing chambers, a conduit for admitting fuel, air and exhaust gases to said mixing chamber, a fuel supply nozzle located axially of said conduit, va controlling. piston valve slidably mounted' in said conduit and con-v trolling the inlet of fuel, air and exhaust gases thereto, and means for simultaneously operating both the main valve trolling piston valve.

3. A vaporizer for internal-combustion? engines working with paraffin or the like liquid fuel, comprising a heating and vaporizing chamber of wider dimensions at one end than ythe other and connected at its narrowest end to the induction pipe of the engine, a pipe conveying gas from the exhaust of the engine and passing .through the widest part of said`cliamber, a mixing chamber for and the conthe exhaust gases, air andfuel; a spring pressed main inlet valve leading from said mixing chamber to said vaporizing chamber, a conduit leading to said mixingv chamber, an elongatedfuel supply nozzle provided with lateral' perforations and disposed axially in the said conduit, an air inlet to said conduit, and an exhaust gas supply nozzle projecting into said air inlet whereby the gases issuing from said nozzle operate as an injector carrying air into said conduit, a controlling piston valve sliding in said conduit and upon the elongated fuel feeding nozzle, said controlling piston valve beinglocated between the air inlet and the mixing chamber, and controlling the inlet of air,

gases and fuel; 'a rocking lever operating rocking lever, for thepurpose of controlling piston valvefand means for operating said Y pipe conveying gases from the exhaust `ofl the engine an( passing through the widest -part ofsaid'vaporizing chamber, a mixing chamber, a main valve leading from said mixing chamber to the widest pait of said vapori'zing chamber, a nozzle through which a portion of the exhaust gases from said pipe pass,an air inlet associated with said exhaust as nozzle 'whereby the latter acts as `an'inJectoi to draw in and heat the air supply, a controlling valve located between o said-air and exhaust gas nozzle and the said` main valve whereby theVV admissionof sail portion of the exhaust gases and air to the.

mixing chamber scontrolled, and a fuel inlet nozzle projecting axially through said controlling valve, and means foi operating both said main .A and controlling valves whereby the main valve is opened before the controlling valve admits the mixture of ev haust gas -and air to the mixing chamber WALTER vHENRY Hayes. 

